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Decoupling-type constant-pressure oil chamber double-cylinder pneumatic spring

A technology of oil-gas spring and oil cylinder, which is applied in the field of new structure of oil-gas spring, can solve the problems of high cost, high requirement of sealing device, complex structure, etc., and achieve the effect of low cost, lower sealing requirement and easy realization

Inactive Publication Date: 2011-09-07
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are also disadvantages such as complex structure, high cost, and high requirements for sealing devices.

Method used

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  • Decoupling-type constant-pressure oil chamber double-cylinder pneumatic spring
  • Decoupling-type constant-pressure oil chamber double-cylinder pneumatic spring
  • Decoupling-type constant-pressure oil chamber double-cylinder pneumatic spring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] like figure 1 As shown, the atmospheric pressure oil chamber double-cylinder oil and gas spring includes a cylinder lifting ring 1, a cylinder base 2, an oil cylinder 3, an oil 4, an oil cylinder piston 5, an oil cylinder piston rod 6, a piston rod connecting plate 7, a piston rod lifting ring 8, The cylinder piston rod 9, the communication pipe 10, the cylinder piston seal 11, the cylinder piston 12, the cylinder 13, the nitrogen gas 14, the gas valve 15, etc. The oil cylinder 3 and the cylinder 13 are arranged side by side. The oil cylinder 3 is divided into a compression chamber A and an expansion chamber B by the oil cylinder piston 5, and the oil cylinder piston 5 is machined with a corresponding damping channel. The cylinder 13 is divided into an air pressure chamber C and a compensation chamber D by the cylinder piston 12, and the cylinder piston 12 is sealed by the cylinder piston seal 11, thereby isolating the nitrogen in the air pressure chamber C and the oil...

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Abstract

The invention provides a decoupling-type constant-pressure oil chamber double-cylinder pneumatic spring which has a double-cylinder double-rod double-piston structure. Through special structural design, the oil cylinder keeps constant pressure, thus the seal requirement of the pneumatic spring is reduced; and simultaneously damping and rigidity property of the pneumatic spring are decoupled so that the damping and the rigidity property are not influenced mutually, and ideal damping property and the rigidity property of the pneumatic spring can be realized respectively. The pneumatic spring can be connected with an external gas pressure regulating device to realize vehicle posture control; because the rigidity property is decoupled, and the control algorithm can be simplified greatly when the pneumatic spring is used for realizing the vehicle posture control.

Description

technical field [0001] The invention relates to a new structure of an oil-gas spring for automobile suspension and engineering machinery. Background technique [0002] Most of the traditional mechanical passive suspension systems are composed of shock absorbers, coil springs and leaf springs. The coil spring stiffness is usually a fixed value. In order to ensure the smoothness of the vehicle on different road surfaces, the stiffness of the suspension needs to be relatively soft, so a larger suspension space is required. For this reason, in the passive suspension system, people have designed different variable stiffness springs to solve this problem. For example, variable pitch diameter and variable pitch coil springs, main and auxiliary leaf spring suspensions, etc. [0003] The oil and gas suspension is a combination of oil and gas, using the compressibility of the gas as the elastic element of the suspension, using the flow resistance of the oil to achieve vibration red...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/06F16F9/22
Inventor 张红辉
Owner CHONGQING UNIV
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